Question

Give one word answer for the following.

a) The number of protons present in the nucleus of an atom.

b) Elements having 4, 5, 6 ,7 or 8 electron known as.

c) Sodium and chloride ions are held together by strong

d) Isotopes is used for determining the ages of fossil fuels.

e) Element with atomic number 18 is.


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Answer 1

• Atomic number
• Non-metals
• electrostatic force
• Argon